All lines have now reopened following an earlier points failure between Watford Junction and Milton Keynes Central. Trains running between these stations may continue to be cancelled, delayed by up to 20 minutes or revised.
Disruption is expected until 15:30.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.